Scraper



R. E. IVICCAULEY.

SCRAPER.

APPLICATION FILED SEPT. I4, I920.

Patented Mar. 21, 1922.

kgl

-Z- Ei; O

IN VEN TOR.

.i0 BY@ A TTORNEY UNITED STATES PATENT OFFICE.

ROBERT E. MCCAULEY, 0F STOCKTON, CALIFORNIA.

SCRAPER.

Specification of Letters Patent. Patenfd Lian 21 1922 Application led September 14, 1920. Serial No. 410,096.

To all lwhom t may concern.'

Be it known that I, ROBERT E. MOCAULEY, a citizen of the United States, residing at Stockton, county of San Joaquin, State of exact description of the same, reference be ing had to the accompanying drawings and to the characters of reference thereon, which form a part of this application.

This invention relates to improvements in Scrapers or levelers, the principal object being to produce a device of this character combining large capacity withstrength and lightness of weight, reducing the. amount of power necessary to pull it, and incorporating therein certain improvements over all other known devices of this sort which render it capable of taking a larger load and also serving as a land leveler, yet being dumped easily and quickly so that the load may be spread evenly over a large area, or if desired it can be discharged in a single heap. This feature is especially useful when checking land for irrigation projects and building of ditches, dykes, embankments, reservoirs and similar work. The rolling action of the leveler in dumping does not tear down the banks of loose earth previously put in position. Another desirable feature of the invention is that it can be run close to the bank, earth or check for cross checking, there being practically no projection from the ends of the scraperbowl.

I have also arranged the scraper so that it will .be automatically positioned in a scraping, leveling or dumping position with the forward movement of the device, and have provided means for holding it in any of such positions, which means are actuated without any physical effort on the part of the operator being necessary, other than a slight pull on a rope from a position ahead of the scraper.

In the present day, which is the age of machinery, these Scrapers are mostly drawn by tractors, andmy scraper is particularly intended to be connected to such and to be manipulated by the driver of the tractor from his seat thereon, thus making a oneman operated unit. At the same time however, there is nothing which prevents it being drawn by draft animals.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views. i

Fig. 1 1s a top plan view of my scraper, partly broken out to show certain features of construction.

Fig. 2 is a side elevation of the same.

Fig. 3 is an end view of a slidable catchblock.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes the frame, comprising a pair'of horizontal beams, preferably channel irons with the fianges pointing outwardly.

These beams are parallel at their rear ends, and converge together at their forward ends, the channel-webs at such end being bent to overlap each other and being riveted together. A transverse brace beam 2 is positioned about at the point where the beams commence to converge.

Mounted at the rear ends of the frame are journal boxes 3 forming bearings for spindles 4 attached to discs 5 positioned inside the frames, these discs having ground-beard in flanges 6.

oncentric with the discs and extending therebetween, is a scraper blade 7, which is fixed to the flanges 6 and extends peripherally thereof `for a distance somewhat less than half the circumference.

One edge in particular of the plate is beveled or sharpened as at 8, while for a certain distance ahead of such edge the flanges 6 are cut away, as indicated at 9, so that the edge of the scraper plate will have a better chance to bite into tlie ground.

When the scraper is to be transported any considerable distance however, these spaces may be covered with a removable curved plate (not shown) so that the ground bearing area is uniform throughout.

Aheadofthe discs, and in close alinement therewith are rigidside-plates 10, fixed to the frames 1, which permlt large loads to be conveyed without any working around the sides of the discs. Y 4

If unrestricted, the discs and scraper plate attached thereto revolve constantly with the forward movement of the frame.

To prevent such movement when desired, and to allow the scraper plate and discs to be held in certain predetermined positions, I provide on the outer face of the discs a plurality of radially positioned lugs 11, while slidably mounted on the anges 1a of the beams lare blocks 12, these blocks being positioned ahead of the lugs and being beveled on their upper faces to adapt them to contact with the adjacent radial face of any f one at a time of said lugs.

.bodily Tomanipulate the blocks in unison, links 13 extend from lugs 14 on the blocks to arms 15 mounted on a transverse shaft 16 turnable in the frame, said shaft having a lever 17 projecting upwardly therefrom and preferably central thereof, from the upper end of which a cable or, rope 18 extends forward to a point adjacent the seat of the tractor, if such is used. The lever and arm structure is arranged so that when the lever is moved forward about its pivotal shaft, the blocks 12 also move forward out of the plane of the lu s on the discs.

`o normally hold said blocks in contact with the lugs, springs 19 are connected to the frame and to the rear end of the blocks.

On each disc there are preferably three of the lugs 11, in alinement of course with those on the other` disc. One pair of said lugs is positioned to be engaged by the blocks 12 when the cutting edge of the blade 7 is adjacent the ground, in which position the blade of course faces forward.

Another pair of the lugs is engaged b the blocks when the forward rotation o the discs has raised the edge 8 a distance to the rear suicient so that the scraped load is spread over the ground rather than being dumped, while the remaining lugs position the discs so that the plate 7 is inverted completely, thus insuring that 'the load will be quickly dumped in a compact heap. l

The three positions specified will I believe fill the usual requirements, but of course as many lugs, may be used to ive other settinglof the scraper should this be found deslra e. f

Wheit is desired to transport the device from place to place', the leverV 17 is pulled forward so that the blocks 12 clear the lugs, and is of course then held or tied in such position.

At the forward end of the frame is a draw bar-or tongue 20, mounted for longitudinal adjustment to cross bars 21.

A wheel or truck may be attached to the forward end when used with a chain or other long lhitch as desired for tractors, or a tongue may be placed on the frame when teams are used as themotive power.

It will be noted thatl the shape of the scraper plate and its position relative to the ground when scraping -is such that there is no tendency for the upper layer of dirt in a full load to work over the top of the plate, since with such a quantity of dirt the action on the plate is to raise the same, permitting a little dirt to escape underneath, which both prevents overloading and reduces the friction of the scraper, with the ground when soloaded.

It will also be seen that on account of the acute forward angle which the contacting faces of the lugs and blocks make with each other, relative to the ground, the block will not jam even with the pressure of a full load on the lugs, and may be readily withdrawn.

From the foregoing description it will be readily seen that I have roduced such a device as substantially fuilills the objects of the invention as setl forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such details may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention, what I claim as new and useful and desire to secure by Letters Patent, isz- 1. A scraper comprising a frame, a pair of discs turnably mounted therein, anges on the discs projecting toward each other, anda scraper plate following the contour of the discs and fixed thereto, the ianges being cut away from the cutting edge of the blade for a certain distance forward thereof.

2. A scraper comprising a frame, discs turnably mounted therein, a scraperplate following the contour of the discs and fixed thereto, and rigid plates fixed to the frame immediately ahead of the discs and in alinement therewith.

3. A scraper comprising a frame, discs turnably mounted therein, a scraper plate following the contour of the discs and fixed thereto, each disc having a plurality of lugs on the outer faceV thereof, and a block for each disc slidable on the frame and arranged to be engaged by one at a time of said lugs withl the rotation of the discs, or to be moved out of the plane thereof at will.

4. A scraper comprising a frame, discs turnably mounted therein, a scraper plate following the contour of the discs and fixed thereto, each disc having a plurality of lugs lon the outerA face thereof, a;block for each sliding the blocks out of the plane of said one at a time of said lugs with the forward lugs to permit free rota-tion of the discs. rotation of the discs, the contacting faces of 10 5. In a scraper including a frame and the lugs and block being at an acute and turnably mounted discs to which the scraperforward angle with the ground, whereby the 5 plate is connected, lugs on either disc problock may be easily Withdrawn from Contact jecting from the outer face thereof, and a with said lugs. block slidably mounted on the frame and In testimony WhereOfI affix my signature. 15 adapted to be positioned in the path of any ROBERT E. MCCAULEY. 

